Computing device.



G. E. LEONARD.

COMPUTING DEVICE,

APPLICATION FILED MAR.21, 1912.

Patented Oct. 28, 1913.

GEORGE EVEBSON LEONARD, OJ? GARDEN CITY, NEW YORK.

COMPUTING DEVICE.

Application ledMerch 21'. lt.

Specification of Letters Patent.

Patented Oct. 28,1Ji3.

Serial No. 685,389.

To all whom. it may concern Be it knownV that L' GEORGE EvERsoN LEONARD, a citizen of the United States, residing at Garden City, in the county of Nassau and-'State of New York, have intances.

Another object is the provision of an easily comprehended,'accurate and handy calculator for problems involving the times of transit on railways or other means of transportation. y

Another object is 'the provision of means adapted to indicate readily vand Without ap' preciable mental effort on the part of the user answers to a large variety of problems involvingr the times of transit over given parts of one or more lines of a railway system on one or more classes of trains.

Other obiects will bein part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter sel, forth. andthe scope'ot the application of which will be indicated in the following claims.

In the drawing, in which is illustrated one of various possible embodiments of my invention. the figure shown represents a top plan or diagram view of the device.

Referring in detail to the drawing,

illustratingT the preferred embodiment. ofy

my inventiom-A, designates a movable member such as a rotatable disk. which is shown as preferably comprising a circular piete of sheet material that is superimposed or mounted on the nnderlving support or hase B. to lie flat. iu suhstantiallv the same horizontal plane therewith, and which is adiptcd to he moved or turned hy the hand ot' the operator into different positions, by

reason of the pivoted connection at its center, as shown-at C. In this construction the rotatable disk A, is shown as arranged concentrically Within a space formed by sets of annularly disposed indicia or tabular devices, D. E. and F., which are marked or printed on the upper face of the base B. These annular sets of indicia or tabular devices are provided to represent graphically one or more of the various lines or routes of a railway system (such, for example, as the New York city subway) arranged in a systematic order, while each.set of indicia or tabular devices comprises lines and spaces that are marked to indicate the relative location of thev stations or streets on the rcspective lines forming the system` the spaces between adjacent indicia relatingr to time intervals, as will be hereinafter more fully explained. The rotatable disk is provided on its peripheral port-ion or edge with lines and spaces arranged to form an annular set of indicia` to designate time intervals, while the radially disposed lines thereof are extended so as to be adapted to he brought into coincidence or register with the adjacent radiallyextended lines or markings of any one of the sets of indicia or tabular devicf-s printed on the base, to thereby provide a reading that will indicate in connection with the relative .location and distance between any given stations7 the time of travel irequired therebetween. The rotatabie or timing disk scale is shown as coinprising primary intervals (al and subintervals (b) to designate intervals of time in minutes and fractions thereof, while the radially disposed lines of said scale are cxtended to the edge of the disk to present thereby an indicating edge. The annular set of indicia thus formed is provided prefcrahly with two sets or series of numerals or totalizingr figures that are arranged in concentrically disposed lines or columns.

which extend progressively' from the zero mark l. in reverse directions and which.

serve in connection with said division lines disk serves for the computation of time, whcnremployed, by reading clockwise as 1n conirmtingr the time of travel going in the direction correspondingr to clockwise on the scale D, that is to say, south, while the inner set or series J. serve. to designate the meas ure of time of travel by reading the totalizing figures counter-clockwise in computing the time of travel goin,"r in the opposite direction, say north.

Referring now more particularly to the `schematic arrangement of the `respect-ive lines or routes of the subway as indicated by the line scales or tabular devices on' the base B, it will be noted that the main (express) line is represented 'as extendin by curve line scale in concentric coinci ence with the edge of the timing disk from the point marked Atlantic ave., `on che right hand side of the disk, to the point 'marked' 242, on the left hand side o the disk. Fur-- thermore it will be noted that the diverging line, designated as the east' siie, which vstarts from the junction -station designated as 96, on the main line, extendsa definite length to the station Amarked 180, as denoted by the-outer curve line scale that extends coneentric'ally with respect to 1 the inner curve or that portion thereof that extends from 96 to a point between 231 and 238.

The lines and 'routes thus far described are employed in the subway, primarily, as express lines and the stations thereon are ap ropriately designated.

xtendin from right to left at a point above the timing disk A, isa supplemental annular local-line scale F, of definite length,

which comprises radially. disposed lines to indicate-station location.v -This scale extendsinconcentric and spaced relation with respect to that portion of the ex ress line traversed by local trains as well., he local line scale in addition bears Station lines that extend in radial coincidence to points or stations on the express line, where changes can be made for travel from express trains to locals and vice versa. In additionV to the indicia relating to distances the local line scale bears thereon indicia relating to time intervals, as indicated by the lower line of numerals, the use or application of whichv will be presently pointed out.-

Lege-nds.-Associated' with the line scales or tabular devices on the base B are ,tobe found a propriate index or guiding'words or legends. The express line scales are each denoted by the words Express as shown in the drawing, while the. west side and east side lines are properly indicated byxsuch designations. The supplemental line scale is likewise provided with the word Local centrally arranged. immediately above said scale. The supplemental scaleis ,further provided with the word Local immeditatcly to the right of said scale, and with turned until its zerosliark the word Stations immediately to the left thereof. The entire layout of scales and tabular devices is provided at a point above the scales'and centrally arranged withoppositely directed curved line arrows, bearing indicia suitable for showing at aglance the direction of travel.

The operation of the above described e'rn-v bodiment of the invention will be clearfrom a statement of general rules to be observed, followed by two or three specific.examples ofthe application of said 111le's i To find the time ofgtransitg between' two stat-ions: I. Blaee arrow' atfexpress''fsta tion at the beginning of journey.a IL'vGQvingdown town or south (toward Brooklyn.) ,3

read'outer series of gures on disk'op osite' pxpress station at endof journey., I. Going up town or northjfroni Brooklyn), read, inner set or yseries Vof figues onvdisk opposite express station-at end of journey. I .If'coming 'from or going-to 1x3-local station addthe minutes vmarked .onli tion curve. v This device has itslcalculations based yon the average time foundby actual experience staon many journeys to have been consumed I between the different stations.

. Briefly, the device is employed in the foli lowing manner, to wit: If lthe station select ed from which to calculate the time of-travel is that indicated in the byQthe radially extended line-'1de'signa. ted... v as:- BB, (Brooklyn Bridge) tllef-.rotatabledikis .-fhfene designated by thegindexarowQ r G, -registers therewith, fzwhereupon iffit is desired to find orcompute-the timeof travel from that point going lup town to -the Grand Central orfG. C. Station, all that is,`A necessary V to do is to read thetotalizin' figure of the inner'annular-seri'es on the dis atthe inter point opposite or coincident with thattmark` ing the station .designated as Gr.10. This we find to be 8. Therefore the averagetime of travel on the express line from Brooklyn Bridge or BB to Grand Central Station or (i. C. will be eight minutes. If it is Vdesired to. continue the journey by a'transfer from the express line to the local linrl the timel oftravel required to continue to the 50th Street Station can readily be estimated by yreading the supplemental scale marked Local,

are required to travel on the local to Times Square '(T. Sq.),and l minutes more or a totalof 3?; minutes to 50th street, from Grand #Central StatioQ-{gwhich sum is to be added to the 8 minutes 1'oli.i\ i.t1 ed ,as the Y whenewefinditindicated that two (2) minutes Grand Central, giving 11% minutes as the' time of transit between 'Brooklyn Bridge vand 50th street. By this simple process of sired to estimatel the time'o travel -from the the scope and value of the device is correspondingly increased. To give another eX- .ample of the employment of this device let it. again'be assumed that. the disk has been adjusted so that the zero-mark I, registers as shown in the drawing, with the BB station designation, and that it is desired to compute .the time of travel therefrom to Borou h Hall, Brooklyn,-in this case we find with the disk thus I adjusted that the mark ofthe disk ,registering with the Borough Hall mark to bea `minute subdivision line, which in reading must beadded to the adjacent totalizing figure, of the proper series,'which we'ind to be 8, of the outer annular series. Therefore wefind that the average time it will take tov travel from BB Station to Borough Hall Station is 8 minutes.` To givefurther example of the use of this devicesup osing it is desame starting point as' indicated by the arrow G, namely Brooklyn Bridge Station and that the destination is Jackson Station inthe east sideiexpress line,-,we tind by A consulting the totalizing'figures of the inner series, z'. j point with the disk adjusted as showrn'to be 30,-in other words, ,it. will e take 30 minutes to make vthe trip from Brooklyn Bridge Station to Jackson Station.

The above examples are merelyy indicative'of the use of the device and no attempt is here made to exemplify the full capacity of the device andas many changes could be made in the above constructionand many apparently' widely differentembodiments of this invention could be made without departing from the scope thereof, it is'intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting It is also to be understood that the language used in the following claims is intended to cover all of` the generic and specific features of the `invention herein described 'and all statements.

of the scope of the invention, which,'as a matter of language, might be said to fall therebetween.

Having described my invention, what I desire to claim as new and useful is:

l. ln a computing device, in combination, two juxtaposed relatively movable scales, the first graduated in unit-s of time and the second designating localities, the spaces bctween adjacent. indicia of the second scale being proportional to time intervals; va third scale fixed relatively to the second and having indicia in 'common with indicia of the second scale, the spaces between adjacent indicia of the third scalebeing marked to designate other time intervals, whereby time intervalstbetween localities designated on differentl scales may be found e. the figure set againstatliatv by adding a time vinterval indicated on the first scale to certain of the time intervals marked on the third scale.

2. In a computing device, in combination, two relatively fixed scales, both indicating localities, certain of the localities being common to ,both scales, the spaces between adjacent indicia on the first scale being proportional to time intervals, the spaces between adjacent indicia on the second scale being marked to indicate other time intervals, a third scale graduated in units of time, said third scale being juxtaposed and movable relatively to said first scale, whereby thel time intervals between localities in- 'dicated on different scales may be calculated jacent indicia being proportional to timeA intervals, a second scale in juxtaposition to the first scale, and provided w1th indicia designating'localities, someof the localities being common to the twor .s`cales, the spaces between adjacent indicia on the second `scale being markedto indicate other time intervals, and a second'support adapted to be adjustably positioned with respect to said lirstsupport, and having indicia designating time intervals, whereby the time intervals between localities indicated on dierent scalesmay be calculated by adding a' time interval indicated on the second support to certain of the time intervals marked on the second scale. Y' -K 4. In a computing device, in combination, a support, a scale thereon with indicia designating lccalities, the spaces between adjacent indiciabeing proportional to time intervals, a second scale in juxtaposition to the first scale, and provided with indicia. designating localities, some of the localities being common to the two scales, the spaces; between adjacent indicia on 'the second scale being marked to indicate other time intervals, and a second support adapted to be adjustably. positioned 'with respect to said first support, and having two sets of indicia extending in opposite directions, and both designating time intervals, whereby the time intervals between localities indicated on dif ferent scales may be calculated by adding a time interval indicated on said second support to certain of the time intervals marked on the second scale. Y I

5. In a computing device, in combination, a support, an annular scale thereon with iudicia designatinglocalities, the-spaces between adjacent indicia being proportional to time intervals` a second annular scale in juxtaposition to the first scale and provided with indicia designating localities, some of the alities being commes. to the tWO scares, the spaces between adjacent indicia on the second scale being marked to indicate other time intervals, 'and a disk adapted to be adjustably positioned with respect to said first support, and having adjacent its rim indicia designating time intervals, whereby the time intervals between vlocalities indicated on different scales may be calculated by adding a time interval in dicated on the disk to certain of. the time intervals marked on the second scale.

6. In a computing rlevice, in combination, a support, an annular scale thereon with indicia designating localities, the spaces between adjacent indicia .being proportional to time intervals, a second annularscale in juxtaposition to the first scale, and provided with 'indicia designating localities, some of the lccaliti'es being common .to the two scales, the spaces between adjacent indicia on the second scale being marked to i indicate other time intervals, and a disk adapted to be adjustably positioned with respect to said first support, and having ad- 25.

jacent its rim two sets of indicia extending in opposite directions, and both designating time intervals, whereby the time intervals between localities indicated on diierent scales may be calculated by adding a timeto GEORGE EVERSON LEONARD.

Witnessesz HOWARD J. .Marmein VALKER B. VAtnER. 

